Kabushiki Kaisha Toshiba

Mika Inada

Keiko Ito

Koji Hashimoto

According to one embodiment, a method of quantifying a target nucleic acid containing a first sequence in a sample is provided. The method includes preparing a substrate on which a plurality of detection regions are arranged, forming a reaction field by placing, on the substrate, a reaction liquid containing a sample, a primer set, and an amplification enzyme, maintaining the reaction field in an isothermal amplification condition, detecting a detection signal for each of the detection regions, determining, for each of the plurality of detection regions, whether positive or negative and detecting or quantifying the target nucleic acid based on the number of positive and/or a rise time of each of the positive detection signal.

Nucleic acid detection or quantification method, chip and assay kit therefor, device for detecting or quantifying nucleic acid and program therefor

According to one embodiment, a primer set for elongating a target short-chain nucleic acid containing a first sequence to obtain an elongated product is provided. The elongated product contains a second, a third, a fourth sequence, a complementary sequence of the 1'-th sequence and a sixth sequence. The complementary sequence of the 1&#x2032;-th sequence is a loop primer sequence. The primer set contains a first elongation primer containing a first elongation primer sequence and a complementary sequence of the sixth sequence, and a second elongation primer containing a second elongation primer sequence, the fourth, the third, and the second sequence.

Short-chain nucleic acid elongation primer set, assay kit, and short-chain nucleic acid elongation, amplification and detection methods

According to one embodiment, a nucleic acid reaction tool includes a support having a first surface, a covering body having a second surface, and a groove opened on the second surface, and a primer set. The covering body is in contact with the support to form a reaction space surrounded by the first surface and the groove. The groove includes, on an inner surface of the reaction space, rising surfaces opposed to each other, and a rear surface connecting one end of the side surfaces, and a primer fixing region to which the primer set is fixed, the primer fixing region being located at a corner where the one end of the side surfaces connected to the rear surface in the reaction space.

Nucleic acid reaction tool, nucleic acid detection/quantification kit, and nucleic acid detection/quantification method

In general, according to one embodiment, a method containing, reverse-transcribing the first sequence in the target RNA, to obtain a reverse-transcription product containing a first' sequence complementary to the first sequence, dissociating the reverse-transcription product from the target RNA, hybridizing an elongation primer and the reverse-transcription product to elongate both, thereby obtain an elongation product, and maintaining the amplification reaction liquid containing the elongation product, a primer set and Tin(exo-) DNA polymerase and/or Bsm DNA polymerase under an amplification reaction condition, to amplify the first&#x2032; sequence.

RNA amplification method, RNA detection method and assay kit

According to one embodiment, a method for detecting target nucleic acid includes the following steps. (A) A reaction field is formed by placing a reaction mixture on an electrode, and the reaction mixture contains the sample, a primer set, an amplification enzyme, 4 mM to 30 mM of magnesium ion, and a redox probe. The redox probe has an oxidation reduction potential, which generates an electric signal of which amplitude increases. (B) The reaction field is maintained under an amplification reaction condition. (C) The electric signal is detected with the electrode. (D) Existence or quantity of the target nucleic acid is determined.

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Tokyo, Japan

Mika Inada